The Commodity Futures Trading Commission added another weapon to its enforcement arsenal today by issuing a new rule that demands derivatives traders record and store trade-related phone calls, voice mails and online chatter.

The final rule, touted as necessary for policing the futures market and to โ€œpreserve critical evidence” requires that futures commission merchants (FCMs), introducing brokers (IBs) with aggregate gross revenue over $5 million during the past three years, and members of designated contract markets (DCMs) and swap execution facilities (SEFs) log and record all oral communications that lead to the execution of a commodity futures or options contract, retail foreign exchange transaction, or swap. The recordings must document any and all discussions related to  quotes, solicitations, bids, offers, instructions, trading, and prices.